Automated peritoneovenous shunt
First Claim
1. In an implantable anti-reflux fluid displacement pertoneovenous shunt system which comprises a fluid collecting device, a anti-reflux anti-backdiffusion, pump, an anti-reflux anti-backdiffusion non-thrombogenic catheter, and flexible tubing connecting said collecting device and pump and said pump and catheter in series, the improvement which consists in providing, as the pump of said shunt system, a magnetically driven pump having at least one variable volume chamber, a movable pumping mechanism for varying the volume of said chamber, and said pump including a magnetic armature coupled to drive the pumping mechanism and adapted for operation by a magnetic drive external of the body in which the shunt system is to be implanted.
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Accused Products
Abstract
An implantable, anti-reflux, fluid displacement peritoneovenous shunt system. The system includes a double chambered multi-micro-orifice ascites collection device, a magnetically driven pump, and an anti-reflux, anti-backdiffusion, non-thrombogenic catheter tip, all connected by flexible tubing. The shunt is used to transfer fluid from the peritoneum to the cardiovascular system to prevent accumulation of fluid within the peritoneal cavity. The magnetically operated pump may be of either the reciprocating diaphragm or piston type or it may be a rotary driven bellows displacement pump.
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Citations
10 Claims
- 1. In an implantable anti-reflux fluid displacement pertoneovenous shunt system which comprises a fluid collecting device, a anti-reflux anti-backdiffusion, pump, an anti-reflux anti-backdiffusion non-thrombogenic catheter, and flexible tubing connecting said collecting device and pump and said pump and catheter in series, the improvement which consists in providing, as the pump of said shunt system, a magnetically driven pump having at least one variable volume chamber, a movable pumping mechanism for varying the volume of said chamber, and said pump including a magnetic armature coupled to drive the pumping mechanism and adapted for operation by a magnetic drive external of the body in which the shunt system is to be implanted.
Specification